KR101677476B1 - Service provisioning system and method, and mobile edge application server and support node - Google Patents

Abstract

Embodiments of the present invention provide a service provision system and method, a mobile edge application server and a support node. The system includes at least one mobile edge application server (MEAS) and at least one mobile edge application server support node (MEAS-SF), wherein the MEAS is located on the access network side and is connected to one or more base stations , The MEAS-SF is located on the core network side, is connected to one or more MEASs, and is connected to the packet data network gateway (P-GW). In the service providing system provided in this embodiment, a service such as content and application service provided by the SP is deployed in the MEAS, and the MEAS can provide the service data requested in the service request to the user device When present, the MEAS locally directly generates service data corresponding to the service request; Because the MEAS is typically close to the base station (eNodeB) in physical placement, the user equipment immediately acquires the required service data from the RAN side, thereby avoiding data congestion between the RAN and CN and saving network resources.

Description

SERVICE PROVIDING SYSTEM AND METHOD, AND MOBILE EDGE APPLICATION SERVER & SUPPORT NODE < RTI ID = 0.0 >

Embodiments of the present invention relate to communications technology, and more specifically, to a service provision system and method, and a mobile edge application server and support node.

With the development of mobile Internet and the development of wireless network technologies such as High Speed Packet Access (HSPA) technology and Long Term Evolution (LTE), and the rapid spread of smart devices, As capacity is increasing and operators are expanding or leasing backhaul to meet the demand for bandwidth between the user device and the Internet, this leads to a waste of network configuration and usage costs.

In the prior art, services such as content and application services provided by a Service Provider (SP) can be temporarily stored on a server, which can be stored in a telecommunication room of a mobile operator (CN), and a user equipment (UE) acquires a service from a server via a radio access network (RAN) and a CN .

In the above technical solution, the deployment of the server temporarily storing the service data on the core network side can reduce the backhaul between the CN and the Internet, but easily causes congestion of data and waste of bandwidth resources between the RAN and CN. .

Embodiments of the present invention provide a service providing system and method, and a mobile edge application server and a support node, which are used to solve the problem of data congestion between the RAN and CN of the prior art and to conserve network resources.

According to a first aspect, an embodiment of the present invention provides a service providing system comprising at least one mobile edge application server (MEAS) and at least one mobile edge application server support node (MEAS-SF Wherein the MEAS is located on the access network side and is connected to one or more base stations, the MEAS-SF is located on the core network side, is connected to one or more MEASs, and the packet data network gateway P-GW, wherein the MEAS receives a service request transmitted by a user equipment via a connected base station and transmits the service request to the MEAS-SF, wherein the service request is transmitted to the user equipment Indicates requesting a service from a service provider (SP); Wherein the MEAS-SF is configured to transmit the requested service data in the service request to the user equipment through the connected base station if the MEAS is able to provide the service data requested in the service request to the user equipment, Receiving a service request transmitted by the MEAS so that the core network side can charge the service data requested in the service request and the service request, and transmitting the service request to the SP via the P-GW And is configured to receive service data sent by the SP and requested in the service request via the P-GW.

In a first possible implementation of the first aspect, if the MEAS is unable to provide the requested service data in the service request to the user equipment, the MEAS may request the service requested in the service request and transmitted by the SP To obtain data from the MEAS-SF, and to transmit the service data requested in the service request and transmitted by the SP to the user equipment via the connected base station.

Referring to a first possible implementation of the first aspect or the first aspect, in a second possible implementation, a service request sent to the MEAS-SF by the MEAS further has service processing indication information, Processing instruction information is used to indicate whether the MEAS is capable of providing the service data requested in the service request to the user device, and the MEAS-SF sends the service data requested in the service request to the user device If so, discarding service data requested in said service request and transmitted by said SP; Otherwise, if the MEAS is unable to provide the requested service data in the service request to the UE, it is further configured to transmit the service data requested by the service request and transmitted by the SP to the MEAS.

Referring to any possible implementation of the first or second possible implementation of the first aspect or the first aspect, in a third possible implementation, the MEAS is configured to send a service request sent by the user equipment to the connected base station Via the connected base station, a first link establishment request sent by the user equipment, wherein the first link establishment request is used to request establishment of a connection between the user equipment and the SP ; Sending the first link establishment request to the MEAS-SF, receiving a first link establishment response from the SP for the first link establishment request sent by the MEAS-SF; Wherein the MEAS-SF is further configured to transmit the first link establishment response for the first link establishment request to the user equipment via the connected base station, And transmits the first link establishment request to the SP via the P-GW; Receive the first link establishment response for the first link establishment request from the SP via the P-GW, and forward the first link establishment response to the MEAS.

With reference to any possible implementation of the first or second possible implementation of the first aspect or the first aspect, in a fourth possible implementation, the MEAS is configured to send a service request sent by the user equipment to the connected base station Via the connected base station, a second link establishment request sent by the user equipment, wherein the second link establishment request is used to request establishment of a connection between the user equipment and the SP , And to forward the second link establishment response for the second link establishment request to the user equipment via the connected base station, wherein the service request sent to the MEAS-SF by the MEAS is further configured to be transmitted to the MEAS Further comprising connection information between the user equipment and the MEAS-SF, wherein the MEAS-SF is transmitted by the MEAS, And transmits a third link establishment request to the SP through the P-GW according to the connection information, and transmits a third link establishment request for the third link establishment request, And to receive a response from the SP via the P-GW.

With reference to any possible implementation of the first, second, third or fourth possible implementation of the first aspect or the first aspect, in a fifth possible implementation, the MEAS determines whether the service data requested in the service request The MEAS-SF is further configured to synchronize the information of the service data requested in the service request with the MEAS if the MEAS-SF can provide the user equipment with the MEAS-SF, or the MEAS- Lt; RTI ID = 0.0 > MEAS. ≪ / RTI >

According to a second aspect, an embodiment of the present invention provides a mobile edge application server, which is located on the access network side and is connected to one or more base stations, wherein the mobile edge application server node (MEAS-SF), the mobile edge application server comprising: a receiver configured to receive a service request sent by a user device via a connected base station and to transmit the service request to the MEAS-SF; - said service request indicating that said user equipment is requesting a service from a service provider (SP); A processor configured to determine whether the MEAS is capable of providing requested service data in the service request to the user device; And if the processor determines that the MEAS can provide the requested service data in the service request to the user device, sending the requested service data in the service request to the user equipment via the connected base station Lt; / RTI >

In a first possible implementation of the second aspect, the receiver, when the processor determines that the MEAS can not provide the requested service data in the service request, Wherein the transmitter is further configured to obtain service data transmitted by the SP from the MEAS-SF, wherein the transmitter is further adapted to transmit service data requested by the service request and transmitted by the SP to the user equipment via the connected base station .

Referring to the first possible implementation of the second aspect or the second aspect, in a second possible implementation of the second aspect, the service request sent by the transmitter to the MEAS-SF further comprises service processing indication information And the service processing indication information is used to indicate whether the MEAS can provide the service data requested in the service request to the user equipment.

Referring to any possible implementation of the first or second possible implementation of the second aspect or the second aspect, in a third possible implementation of the second aspect, the receiver further comprises: Wherein the first link establishment request is further configured to receive a first link establishment request sent by the user equipment via the connected base station prior to receiving via the connected base station, Wherein the transmitter is further configured to transmit the first link establishment request to the MEAS-SF, and the receiver is further configured to transmit the first link establishment request to the MEAS- Wherein the transmitter is configured to receive a first link establishment response from the SP for the request, Axis response to the user equipment via the connected base station.

Referring to any possible implementation of either the first or second possible implementation of the second aspect or the second aspect, in a fourth possible implementation of the second aspect, the receiver further comprises: Wherein the second link establishment request is further configured to receive a second link establishment request sent by the base station via the connected base station prior to receiving via the connected base station, Wherein the transmitter is operable to transmit the second link establishment response for the second link establishment request to the user equipment via the connected base station and to request the establishment of a connection between the MEAS and the user equipment Add connection information to the service request, and transmit the information to the MEAS-SF.

According to a third aspect, an embodiment of the present invention provides a mobile edge application server support node (MEAS-SF), which is connected to one or more mobile edge application servers (MEAS) A gateway (P-GW), the mobile edge application server support node comprising: a receiver configured to receive the service request sent by the MEAS; And a transmitter configured to transmit the service request to a service provider (SP) via the P-GW, wherein the receiver is further configured to cause the core network side to request a service request To receive service data requested by the service request and transmitted by the SP, via the P-GW, so as to be able to transmit the service data.

In a first possible implementation of the third aspect, the service request received by the receiver further comprises service processing indication information, wherein the service processing indication information indicates that the MEAS transmits the service data requested in the service request to the user It is used to indicate whether the device can be provided.

Referring to any possible implementation of the first possible implementation of the third and third aspects, in a second possible implementation of the third aspect, the edge application server support node comprises: The receiver determines whether the MEAS can provide the service data requested in the service request to the user device after receiving the service data requested in the service request and transmitted by the SP via the P-GW Determining whether the service data requested by the service request has been received; And, if the processor determines that the MEAS is unable to provide the requested service data in the service request to the user device, further requesting in the service request and sending the service data sent by the SP to the MEAS Lt; / RTI >

Referring to any possible implementation of the first and second possible implementations of the third or third aspect, in a third possible implementation of the third aspect, the receiver comprises: a first link, Wherein the first link establishment request is used to request establishment of a connection between the user equipment and the SP, and wherein the transmitter transmits the first link establishment request to the P-GW Wherein the receiver is further configured to receive a first link establishment response for the first link establishment request from the SP over the P-GW, Is further configured to send the first link establishment response to the MEAS.

Referring to any possible implementation of the first and second possible implementations of the third or third aspect, in a fourth possible implementation of the third aspect, the service request received by the receiver further comprises adding connection information Wherein the connection information is used to indicate that a connection is established between the MEAS and the UE, and the transmitter transmits a third link establishment request through the P-GW according to the connection information, SP and the receiver is further configured to receive a third link establishment response for the third link establishment request from the SP via the P-GW.

Referring to any possible implementation of the first, second, third and fourth possible implementations of the third or third aspect, in a fifth possible implementation of the third aspect, the MEAS is used in the service request The processor is further configured to synchronize information of the requested service data in the service request with the MEAS if the processor determines that the requested service data can be provided to the user device, And further to synchronize protocol stack information between the device and the SP with the MEAS.

According to a fourth aspect, an embodiment of the present invention provides a service providing method, wherein a mobile edge application server (MEAS) receives a service request transmitted by a user equipment through a connected base station , Sending the service request to a Mobile Edge Application Server Support Node (MEAS-SF); And if the MEAS is able to provide the service requested in the service request to the user equipment, sending the requested service data in the service request to the user equipment via the connected base station, , The user equipment is requesting a service from a service provider (SP), the MEAS is located on the access network side and is connected to one or more base stations and the MEAS-SF is connected to the mobile edge application server support node It is connected.

In a first possible implementation of the fourth aspect, if the MEAS is not able to provide the requested service data in the service request to the user equipment, the MEAS sends the service data requested in the service request and transmitted by the SP From the MEAS-SF, and to forward the service data requested by the service request and transmitted by the SP to the user equipment via the connected base station.

Referring to any possible implementation of the first possible implementation of the fourth aspect or the fourth aspect, in a second possible implementation of the fourth aspect, the service request sent to the MEAS-SF by the MEAS, Wherein the service processing indication information is used to indicate whether the MEAS is capable of providing the service data requested in the service request to the user equipment.

Referring to any possible implementation of the first or second possible implementation of the fourth or fourth aspect, in a third possible implementation of the fourth aspect, the mobile edge application server (MEAS) Receiving, by the MEAS, a first link establishment request sent by the user equipment via the connected base station, before the MEAS receives the service request transmitted by the user equipment via the connected base station, And to establish a connection between the SP and the SP; Sending, by the MEAS, the first link establishment request to the MEAS-SF such that the MEAS-SF can transmit the first link establishment request to the SP; Receiving, by the MEAS, a first link establishment response from the SP for the first link establishment request sent by the MEAS-SF; And the MEAS sending the first link establishment response for the first link establishment request to the user equipment via the connected base station.

Referring to any possible implementation of the first possible implementation of the fourth or fourth aspect, in a fourth possible implementation of the fourth aspect, a mobile edge application server (MEAS) Before receiving a request via a connected base station, the method further comprises the step of the MEAS receiving a second link establishment request sent by the user equipment via the connected base station, And to establish a connection between the SP and the SP; And wherein the MEAS further comprises transmitting the second link establishment response for the second link establishment request to the user equipment via the connected base station, wherein the mobile edge application server (MEAS) Receiving a service request sent by the MEAS via a connected base station and transmitting the service request to a Mobile Edge Application Server Support Node (MEAS-SF), the MEAS having connection information between the MEAS and the UE And sending the service request to the MEAS-SF.

According to a fifth aspect, an embodiment of the present invention provides a method of providing a service, wherein a mobile edge application server support node (MEAS-SF) is connected to a mobile edge application server (MEAS) Receiving a service request; The MEAS-SF sending the service request to a service provider (SP); And the MEAS-SF sends the service data requested in the service request and transmitted by the SP to the packet data network gateway (" SO ") so that the core network side can charge the service data requested in the service request and the service request Wherein the MEAS-SF is located on the core network side and is connected to one or more mobile edge application servers (MEAS), the packet data network gateway (P-GW) Respectively.

In a first possible implementation of the fifth aspect, the service request sent by the MEAS and received by the MEAS-SF further comprises service processing indication information, the service processing indication information indicating that the MEAS is in the service Is used to indicate whether the service data requested in the request can be provided to the user device.

Referring to any possible implementation of the first possible implementation of the fifth or fifth aspect, in a second possible implementation of the fifth aspect, the MEAS-SF is requested in the service request, After receiving the transmitted service data via the P-GW, the method determines whether the MEAS-SF is capable of providing the service data requested by the MEAS to the user device, The service data requested by the service request and transmitted to the MEAS by the SP is transmitted to the MEAS if it is determined in the service request that it is requested in the service request and discards the service data transmitted by the SP . ≪ / RTI >

Referring to any possible implementation of the first and second possible implementations of the fifth or fifth aspect, in a third possible implementation of the fifth aspect, a mobile edge application server support node (MEAS-SF) Before receiving a service request sent by a mobile edge application server (MEAS), the method further comprises: the MEAS-SF receiving a first link establishment request sent by the MEAS; Sending, by the MEAS-SF, the first link establishment request to the SP via the P-GW; The MEAS-SF receiving a first link establishment response for the first link establishment request from the SP via the P-GW; And the MEAS-SF further comprises transmitting to the MEAS a first link establishment response from the SP for the first link establishment request.

Referring to any possible implementation of the first or second possible implementation of the fifth or fifth aspect, in a fourth possible implementation of the fifth aspect, a mobile edge application server support node (MEAS-SF) Receiving a service request sent by a mobile edge application server (MEAS) comprises the steps of: the MEAS-SF receiving a service request sent by the MEAS and having connection information, Is used to indicate that a connection is established between the user devices; Transmitting a third link establishment request to the SP through the P-GW according to the connection information; And receiving a third link establishment response for the third link establishment request from the SP via the P-GW.

Referring to any possible implementation of the first, second, third and fourth possible implementations of the fifth or fifth aspect, in a fifth possible implementation of the fifth aspect, the MEAS is used in the service request If the MEAS-SF is capable of providing the requested service data to the UE, synchronizing information of the requested service data in the service request with the MEAS; Or synchronizing protocol stack information between the user equipment and the SP with the MEAS.

An embodiment of the present invention provides a service providing system and method, and a mobile edge application server and a support node, wherein the MEAS receives a service request sent by the base station and sends the service request to the MEAS-SF; MEAS-SF further sends a service request to the SP; The MEAS sends service data generated locally in response to the service request or received from the SP to the base station, wherein the service data has the requested service in the service request; The base station then transmits the service data to the user device, so that it can provide service to the user device. According to the service providing method provided in this embodiment, if a service such as the content and application service provided by the SP is deployed in the MEAS and the MEAS can provide the requested service data in the service request to the user device, The MEAS locally generates the service data directly in response to the service request; Since the MEAS is generally located close to the base station (eNodeB), i.e., on the RAN side, in the physical arrangement, the user equipment can not obtain the service data provided by the SP via the RAN or CN from the server or the Internet, To obtain the required service data directly, thereby preventing data congestion between RAN and CN and saving network resources.

BRIEF DESCRIPTION OF THE DRAWINGS For a better understanding of the technical solution or prior art of an embodiment of the invention, the following presents a brief introduction to the embodiments or the accompanying drawings, which are needed to illustrate the prior art. Obviously, the appended drawings in the following description illustrate some embodiments of the invention, and one of ordinary skill in the art can derive other drawings from these attached drawings without creative effort.
1 is a schematic architecture diagram of Embodiment 1 of a service providing system according to the present invention.
2 is a schematic architecture diagram of a second embodiment of a service providing system according to the present invention.
3 is a flowchart of Embodiment 1 of a service providing method according to the present invention.
4 is a flowchart of a second embodiment of a service providing method according to the present invention.
5A and 5B are signaling diagrams of a third embodiment of a service providing method according to the present invention.
6A and 6B are signaling diagrams of a fourth embodiment of a service providing method according to the present invention.
7A and 7B are signaling diagrams of a fifth embodiment of a service providing method according to the present invention.
8A and 8B are signaling diagrams of a sixth embodiment of a service providing method according to the present invention.
9 is a schematic structural diagram of Embodiment 1 of a mobile edge application server MEAS according to the present invention.
10 is a schematic structural diagram of Embodiment 1 of a mobile edge application server support node (MEAS-SF) according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS For a better understanding of the objects, technical solutions and advantages of the embodiments of the present invention, reference will now be made, by way of example, to the accompanying drawings, in which: Obviously, the described embodiments are not all embodiments of the invention, but are in some embodiments. All other embodiments, which are obtained by a person skilled in the art based on an embodiment of the invention without creative effort, will fall within the scope of protection of the present invention.

The technical field described in the present invention is applicable to a mobile communication system (GSM), a code division multiple access (CDMA) system, a time division multiple access (TDMA) (WCDMA) system, a Frequency Division Multiple Access (FDMA) system, an Orthogonal Frequency-Division Multiple Access (OFDMA) system, a Single Frequency Division Multiple Access 2G and 3G communication systems and next generation communication systems, such as a Carrier FDMA (SC-FDMA) system, a General Packet Radio Service (GPRS) system, a Long Term Evolution (LTE) System can be used in various communication systems.

The user device associated with the present patent application may be a wireless terminal or a wired terminal wherein the wireless terminal may be a device providing a voice and / or data connection for a user, a portable device having a wireless connection capability, Lt; / RTI > may be represented by another processing device connected to the processor. A wireless terminal may communicate with one or more core networks via a wireless access network (e.g., RAN, wireless access network), and the wireless terminal may include a mobile terminal such as a mobile phone (also referred to as a " For example, the wireless terminal may be a portable, pocket-sized, compact, computer-embedded, or vehicle-mounted mobile device that exchanges language and / or data into a wireless access network. For example, the wireless device may be a personal communication service (PCS) phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) (PDAs), and the like. A wireless terminal may be a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, ), An access terminal, a user terminal, a user agent, a user device, or a user equipment.

A base station (e.g., access point) associated with the present patent application may refer to a device that communicates with a wireless terminal via one or more sectors via an air interface within the access network. The base station may be configured to perform conversion between the routed radio frame and the IP packet and to function as a router between the wireless terminal and another part of the access network where the other part of the access network is an Internet Protocol ) Network. The base station can further adjust the attribute management on the wireless interface. For example, the base station may be a base station (BTS, base transceiver station) in GSM or CDMA, or a base station (NodeB) in a WCDMA network, or may be an enhanced base station (NodeB or eNB or e-NodeB, B), and the present patent application is not limited thereto.

The service providing method uses a Long Term Evolution (LTE) communication system as an example and is described in the embodiment of the present invention. However, the service providing method provided in the embodiment of the present invention can be applied to other communication systems.

1 is a schematic architecture diagram of a first embodiment of a service providing system according to the present invention, in which a plurality of eNodeBs are connected to one Mobile Edge Application Server (MEAS) and one mobile edge It can be applied to a scenario corresponding to a Mobile Edge Application Server-Support Function (MEAS-SF for short). As shown in Fig. 1, the service providing system provided in this embodiment includes at least one MEAS and at least one MEAS-SF, the MEAS is located at the access network side, is connected to one or more base stations , The MEAS-SF is located on the core network side, is connected to one or more MEASs, and is connected to the packet data network gateway (P-GW).

MEAS receives a service request sent by the user equipment via a connected base station and sends a service request to the MEAS-SF, where the service request indicates that the user equipment is requesting service from a service provider (SP), MEAS Is configured to transmit the requested service data in the service request to the user equipment through the connected base station if the service data requested by the service request can be provided to the user equipment.

The MEAS-SF receives the service request sent by the MEAS, transmits the service request to the SP via the P-GW so that the core network side can bill the service data requested in the service request and the service request, And is configured to receive the service data transmitted by the SP and requested in the service request via the P-GW.

With reference to Figure 1, based on the network architecture of the LTE communication system, MEAS and MEAS-SF are added to the embodiment of the present invention. The MEAS is located close to the base station (eNodeB) on the access network side, has services such as content and application services provided by the SP, MEAS-SF can be located on the core network side, and packet data (GPRS) tunneling protocol for the user side, which can be arranged between the P-GW and the Serving Gateway (S-GW) The protocol layer is arranged in the MEAS-SF and the top-to-bottom protocol layer is composed of a transport protocol / user datagram protocol (TCP / UDP), an Internet Protocol : IP), GTPU, UDP, IP, and the like. MEAS and MEAS-SF can be connected to the network, for example, directly connected or connected via a router (route) (two connection situations are shown in FIG. 1, May be selected to be connected to MEAS and MEAS-SF). The dashed line in the figure shows the network communication path existing between the user device and the Internet, briefly shown as a conventional network for a uniform description, and the solid line shows the network Lt; RTI ID = 0.0 > Internet. ≪ / RTI > In this embodiment of the invention, a plurality of eNodeBs correspond to one MEAS and one MEAS-SF.

The user device sends a service request to the eNodeB, and if the eNodeB is connected to the MEAS, the eNodeB can send the service request to the MEAS using the MEAS network. The service request may include requesting the user device to view a service, e.g., video, photo, or the like, that includes content, application services and the like from the SP, Indicates requesting access to an application service. The MEAS determines whether the MEAS can provide the requested service data in the service request to the user device and send the service request to the MEAS-SF, according to a service such as content and application service disposed in the MEAS; If the MEAS can provide the requested service data in the service request to the UE, the MEAS sends the requested service data in the service request to the UE via the eNodeB. MEAS-SF sends the received service request to the SP via the connected P-GW, receives the service data requested by the service request and transmitted by the SP through the P-GW; Function modules such as BC, LIG, and PCRF are connected to or integrated with P-GW, i.e., P-GW is connected to BC, LIG, and PCRF. Thus, the P-GW may be charged and / or intercepted in the user equipment in the downlink process after receiving the service data generated by the SP in the uplink process after receiving the service request described above and in response to the service request interception, and policy control, that is, the core network side can bill for service data requested in a service request and a service request.

If the MEAS determines that the MEAS can not provide the requested service data in the service request to the user device, depending on the services it has, such as content and application services, the MEAS may request the service data sent by the SP, -SF and to transmit the service data to the user equipment via the connected base station.

Specifically, the service request sent to the MEAS-SF by the MEAS additionally has service processing indication information, and the service processing indication information is used to indicate whether the MEAS can provide the requested service data in the service request to the UE do. After receiving the service request sent by the MEAS and having the service processing indication information, the MEAS-SF acquires the service processing indication information by the parsing method, and according to the service processing indication information, the MEAS sends the service requested in the service request Determine whether data can be provided to a user device; If the service processing indication information indicates that the MEAS can provide the requested service data in the service request to the user equipment, the MEAS-SF discards the received service data generated by the SP in response to the service request and transmitted by the SP And initiating a protocol stack information synchronization task to ensure that the service data transmitted by the SP can be received immediately after the eNodeB handover; Otherwise, if the service processing indication information indicates that the MEAS can not provide the requested service data to the user device in the service request, for example, when the requested service data in the service request is not deployed in the MEAS, the MEAS- And sends the received service data generated by the SP to the MEAS in response to the request.

In the first embodiment described above, before receiving the service request transmitted by the user equipment through the connected base station, the MEAS further receives the first link establishment request transmitted by the user equipment through the connected base station, The establishment request is used to request establishment of a connection between the user device and the SP; Sending a first link establishment request to the MEAS-SF, receiving a first link establishment response from the SP for the first link establishment request sent by the MEAS-SF; Sending a first link establishment response for the first link establishment request to the user equipment via the connected base station; MEAS-SF receives the first link establishment request sent by the MEAS and sends the first link establishment request to the SP via the P-GW; Receive the first link establishment response from the SP for the first link establishment request via the P-GW, and forward the first link establishment response to the MEAS.

1, user device 1 is used as an example, user device 1 sends a first link establishment request for link establishment, e.g. a SYN (sync) packet, to eNodeB; After receiving the SYN packet, the eNodeB may send the SYN packet to the SP over a conventional network or through the MEAS network provided in an embodiment of the present invention; If the SYN packet is sent over the conventional network to the SP, then the next procedure and process is the same as the existing procedure and process in the network, transparent service transmission is implemented in the MEAS-SF; Details are made with reference to the prior art and will not be described here again. When a SYN packet is transmitted to the SP through the MEAS network, the MEAS receives the SYN packet transmitted by the eNodeB, records information about the direct or indirect interaction between the MEAS and each network component, and information exchanged during the link establishment process And transmits a SYN packet to the MEAS-SF; The MEAS is sent to the SP via the MEAS-SF and the P-GW over a conventional network of SYN packets. The SP then returns a link establishment response to the user device 1, i.e., the SP sends a SYN ACK to the MEAS via the MEAS-SF, so that the eNodeB can send a SYN ACK to the user device 1, Can be constructed. In this process, the MEAS records the protocol stack information sent to the user equipment at the SP, e.g., the synchronization number and the serial number, which is the link establishment response, e.g., SYN ACK, for the first link establishment request, The MEAS-SF, the MEAS, the S-GW, and the eNodeB to the user device. The user device then returns an ACK to the SP, MEAS records the protocol stack information sent to the SP from the user device, and the protocol stack information is specifically a link establishment response, e.g., ACK, for the first link establishment request, The link establishment response is sent from the user device to the SP via eNodeB, MEAS, S-GW, MEAS-SF, P-GW. Similarly, the MEAS-SF must record the information of the protocol stack interaction. When the user initiates a service request, if the transport layer protocol processing is deployed in both MEAS and MEAS-SF, the MEAS must detect the content or application service and perform synchronization on the protocol stack status and data transfer for each service request and; In the MEAS, when the application layer data is developed without the transport layer protocol processing being developed, the MEAS detects content or application services, and in order to save the backhaul bandwidth, the MEAS and the MEAS-SF perform transmission using the data length and offset information , The MEAS responds to the service requested in the service request according to the mirror image, such as the received data length and offset.

2 is a schematic architecture diagram of a second embodiment of a service providing system according to the present invention. This embodiment can be applied to a scenario in which a plurality of eNodeBs can correspond to one MEAS and one MEAS-SF. The implementation method of this embodiment is similar to the implementation of the method of embodiment 1, and specific principles are referred to Fig. 1 and will not be described again here. Further, in this embodiment, before receiving the service request transmitted by the user equipment through the connected base station, the MEAS further receives via the connected base station the second link establishment request transmitted by the user equipment, The establishment request is used to request establishment of a connection between the user equipment and the SP and transmits a second link establishment response for the second link establishment request to the user equipment via the connected base station, The MEAS-SF receives the service request transmitted by the MEAS, has the connection information between the MEAS and the UE, and transmits the P -GW to send a third link establishment request, and to receive a third link establishment response from the SP for the third link establishment request via the P-GW It consists of a.

2, user device 2 is used as an example, user device 2 sends a second link establishment request to the eNodeB, and after receiving the SYN packet, the eNodeB, in accordance with the flow control principle, Lt; / RTI > If a conventional network is used, then the next procedure and process is the same as the procedure and process in the existing network, the transparent service transport is implemented in MEAS-SF; Details are made with reference to the prior art and will not be described here again. If the MEAS network is used, the MEAS receives the SYN packet sent by the eNodeB and establishes a connection to the user equipment 2 instead of the SP. The MEAS then sends a SYN ACK to the UE 2 over the eNodeB, and the UE 2 returns a second link establishment response, such as an ACK for the second link establishment request, to the MEAS via the eNodeB. That is, the connection between the user equipment and the MEAS is constructed in a three-way handshake. When the user equipment 2 initiates a service request, the MEAS adds connection information to the service request indicating that the connection is established between the user equipment and the MEAS, and sends the connection information to the MEAS-SF; After MEAS-SF acquires link establishment information indicating that only a connection between the UE and the MEAS has been established in the method of parsing, the MEAS-SF sends a third link establishment request via the P-GW in accordance with the connection information SP, and receives a third link establishment response from the SP for the third link establishment request through the P-GW, thereby establishing a connection between the MEAS-SF and the SP.

In Embodiment 1 described above, the user equipment transmits a first link establishment request, allowing the user equipment to directly establish a connection to the SP, and in the second embodiment, the user equipment is indirectly connected to the SP , The UE first establishes a connection with the MEAS and then sends a service request to the MEAS-SF that has connection information indicating that the connection is established between the UE and the MEAS; It should be noted that the MEAS-SF can establish a connection between the user equipment and the SP by establishing a connection to the SP after acquiring connection information by means of parsing. However, the present invention is not limited thereto, and in other possible implementations, the user device of Embodiment 1 may be indirectly connected to the SP, and the user device of Embodiment 2 may be directly connected to the SP.

3 is a flowchart of Embodiment 1 of a service providing method according to the present invention. Referring to FIG. 1, this embodiment is implemented by MEAS, which is described in one example using a scenario in which a plurality of eNodeBs correspond to one MEAS and one MEAS-SF. Specifically, this embodiment may include the following steps.

101: A mobile edge application server (MEAS) receives a service request sent by a user device via a connected base station and sends a service request to a mobile edge application server support node (MEAS-SF) MEAS is placed on the access network side, connected to one or more base stations, and connected to a mobile edge application server support node MEAS-SF.

Specifically, the user equipment may send a service request to the eNodeB, and the eNodeB may send the service request to the MEAS, where the service request indicates that the user equipment is requesting service from the SP. The requested service includes requesting access to an application service, such as requesting access to content and application services, e.g., video, pictures, or the like, or a mailbox, bank account, or the like.

Since the MEAS sends the received service request to the MEAS-SF, the MEAS-SF can send the service request to the SP. In this process, since the MEAS-SF is connected to the P-GW, the MEAS-SF can transmit the service request to the SP via the P-GW. In addition, since the P-GW is connected to a charging center (BC), a legitimate interception gateway (LIG), and a policy control center (Policy and Charging Rules Function: PCRF) May perform associated operations such as billing, auditing, and policy control on the user device after receiving the service request described above.

102: If the MEAS can provide the requested service in the service request to the UE, the MEAS transmits the requested service data in the service request to the UE via the connected base station.

At this stage, since services such as content and application services provided by the SP are deployed in the MEAS, the MEAS can determine whether the requested service data in the service request can be locally provided to the user device, The MEAS transmits the requested service data in the service request to the user device in accordance with the received service request; If the MEAS can not provide the requested service data in the service request to the user device, the MEAS may wait for the service data generated by the SP in response to the service request and transmitted by the MEAS-SF. Specifically, the service request initiated by the user equipment is transmitted to the MEAS via the eNodeB, the MEAS receives the service request, determines whether the MEAS can provide the requested service data in the service request to the user equipment, To the MEAS-SF; The MEAS-SF then sends the service request to the SP, the SP generates the requested service data in the service request, and sends the service data to the MEAS-SF. If the MEAS determines that the service request can be processed, then the MEAS-SF is sent by the SP and discards the requested service data in the service request; Otherwise, if the MEAS determines that the service data requested in the service request can not be provided to the user device, the MEAS-SF sends the service data requested by the SP and requested in the service request to the MEAS, So that the user device can be provided with a service. The service data may include services requested in a service request, such as viewing a user's device for video, pictures, or the like for a user device, or providing application services such as a mailbox, bank account, or the like have.

According to the service providing method provided in this embodiment, the MEAS receives a service request through the connected base station indicating that the user equipment requests the service from the SP, and transmits the service request to the MEAS-SF; MEAS-SF further sends a service request to the SP; The MEAS can provide service to the user equipment, locally generated or received from the SP and transmitted to the user equipment via the base station, the service data requested in the service request. According to the service providing method provided in this embodiment, when a service such as the content and application service provided by the SP is deployed in the MEAS and the MEAS transmits the service data requested in the service request to the user device, Directly and locally generating the requested service data in the service request in response to the service request, and providing the service to the user device; Since the MEAS is generally located close to the base station (eNodeB), i.e., on the RAN side, in the physical arrangement, the user equipment can not receive the service provided by the SP from the server or the Internet via the RAN or CN, Obtain the required service data immediately, avoid data congestion between the RAN and the CN, and save network resources.

Optionally, based on the first embodiment described above, the service request transmitted to the MEAS-SF by the MEAS additionally has service processing indication information, and the service processing indication information indicates that the MEAS transmits the service data requested in the service request to the user It is used to indicate whether the device can be provided.

Specifically, after receiving a service request initiated by the user device and transparently transmitted via the eNodeB, depending on the deployed service, such as the content and application service provided by the SP, whether the MEAS can service the service request , The MEAS determines whether the MEAS can generate the requested service data in the service request. If the MEAS is able to provide the requested service data to the user device in the service request, service processing indication information indicating that the MEAS can provide the requested service data in the service request to the user device is set in the user request; Otherwise, if the MEAS is unable to provide the requested service data to the user device in the service request, service processing indication information indicating that the MEAS can not process the service request is set in the service request, And is transmitted to the MEAS-SF.

Based on the above-described embodiment, in a possible implementation, before receiving a service request sent by a user equipment from a connected base station, the MEAS further includes receiving a first link establishment request sent by the user equipment via a connected base station Wherein the first link establishment request is used to request establishment of a connection between the user equipment and the SP and the MEAS-SF sends a first link establishment request to the SP by sending a first link establishment request to the MEAS-SF have. The MEAS receives a first link establishment response from the SP for the first link establishment request sent by the MEAS-SF, and the MEAS sends a first link establishment response for the first link establishment request through the connected base station To the user device.

For the details, referring to the process of transmitting a first link establishment request in the embodiment of FIG. 1 to establish a connection directly to the SP by the user equipment, it will not be described again here.

Based on the above described embodiments, in another possible implementation, before the service request transmitted by the user equipment is received via the connected base station, the MEAS proceeds to connect the second link establishment request sent by the user equipment to the connected base station Where the second link establishment request is used to request the establishment of a connection between the user equipment and the SP and the MEAS sends a second link establishment response for the second link establishment request to the user equipment via the connected base station .

The step of the MEAS receiving the service request transmitted by the user equipment through the connected base station and transmitting the service request to the MEAS-SF comprises the steps of: transmitting a service request in which the MEAS has connection information between the MEAS and the user equipment to the MEAS- .

For details, referring to the process of indirectly establishing a connection to the SP by transmitting a second link establishment request in the embodiment of FIG. 2, it will not be described again here.

4 is a flowchart of a second embodiment of a service providing method according to the present invention. Based on the aforementioned communication network shown in Fig. 1, this embodiment is implemented by MEAS-SF, which can be applied to scenarios in which a plurality of eNodeBs correspond to one MEAS and MEAS-SF in the communication network Specifically, this embodiment may include the following steps.

201: a mobile edge application server support node (MEAS-SF) receives a service request sent by a mobile edge application server (MEAS), wherein the MEAS-SF is located on the core network side, Is connected to the server MEAS and is connected to the packet data network gateway P-GW.

Specifically, after passing through the eNodeB, the service request initiated by the user equipment is transmitted to the MEAS by the eNodeB, the MEAS further sends the service request to the MEAS-SF, and the MEAS-SF receives the service request. The requested service includes requesting access to content and application services, such as viewing video, pictures, or the like, or accessing application services such as a mailbox, bank account, or the like.

202: MEAS-SF sends a service request to the service provider (SP).

The MEAS-SF sends the received service request to the SP via the P-GW. Functional modules such as BS, LIG, and PCRF are coupled to or integrated with the P-GW, i.e., the P-GW is connected to BC, LIG, and PCRF. Therefore, the P-GW can perform associated operations such as billing, tapping and policy control on the user equipment in the uplink process after receiving the service request described above.

203: The core network side receives the service data requested by the SP and the requested service data in the service request, through the P-GW, so that the MEAS-SF can bill the requested service data in the service request and the service request.

Specifically, all service requests initiated by the user equipment are transmitted to the MEAS via the eNodeB, the MEAS sends all received service requests to the MEAS-SF, and the MEAS-SF sends all received service requests via the P-GW SP, the SP can generate the service data requested in the service request in response to all the received service requests, and transmits the service data to the MEAS-SF via the P-GW, An operation such as billing for requested service data in a service request in the network can be completed.

According to the service providing method provided in this embodiment, the MEAS-SF receives the service request transmitted by the MEAS and transmits the service request to the SP; The SP generates service data in response to all received service requests and transmits the service data to the MEAS-SF via the P-GW; The MEAS-SF determines whether to send the requested service data in the service request to the MEAS, transmitted by the SP, according to the performance of the MEAS providing the requested service in the service request. According to the service providing method provided in this embodiment, a service such as the content and application service provided by the SP is developed in the MEAS and the MEAS-SF determines that the MEAS can provide the requested service data in the service request to the user device , The MEAS-SF discards the service data generated by the SP in response to the service request, and the MEAS directly and locally generates the service data in response to the service request; Instead of acquiring the service provided by the SP over the RAN or CN from the server or the Internet, the user equipment can use the RAN or the CN instead of acquiring the service provided by the SP since the MEAS can generally be located near the base station (eNodeB) To directly obtain necessary service data, thereby preventing data congestion between RAN and CN and saving network resources.

Based on the second embodiment described above, the service request transmitted by the MEAS and received by the MEAS-SF additionally has service processing indication information, and the service processing indication information indicates that the MEAS transmits the service data requested in the service request to the user It is used to indicate whether the device can be provided.

Specifically, after receiving a service request initiated by the user device and flowed to the MEAS via the eNodeB, the MEAS may send a service corresponding to the service corresponding to the service request in response to the service request, such as content and application services provided by the SP, The MEAS determines whether data can be generated. If the MEAS is able to provide the requested service data to the user device in the service request, service processing indication information indicating that the MEAS can provide the requested service data in the service request to the user device is set in the user request; Otherwise, if the MEAS is unable to provide the requested service data to the user device in the service request, service processing indication information indicating that the MEAS can not process the service request is set in the service request, And is transmitted to the MEAS-SF. After receiving the service request having the service processing instruction information, the MEAS-SF parses the service request and, according to the service processing instruction information obtained by the parsing method, the MEAS sends the service data requested in the service request to the user device That is, the performance of the MEAS that provides the requested service in the service request. Then, the MEAS-SF deletes the service processing indication information and transmits the service request to the SP.

Further, after the MEAS-SF is transmitted by the SP and the service data requested in the service request is received via the P-GW, the MEAS-SF determines whether the MEAS can provide the requested service data in the service request to the user device And determines that it is possible to discard and provide the requested service data in the service request if it is determined by the SP that the service data transmitted by the SP and requested service data in the service request is sent to the MEAS .

Specifically, after the MEAS-SF is transmitted by the SP and the service data requested in the service request is received via the P-GW, the MEAS-SF sends the service processing instruction information obtained by the parsing method, that is, And determines whether the service data transmitted by the SP and requested in the service request can be transmitted to the MEAS according to the performance of the MEAS providing the service. If the performance of the MEAS recorded by the MEAS-SF indicates that the MEAS can provide the requested service data in the service request to the UE, the MEAS-SF discards the requested service data sent by the SP and requested in the service request ; In addition, if the performance of the MEAS recorded by the MEAS-SF indicates that the MEAS can not provide the requested service data to the user device in the service request, then the MEAS-SF sends the requested service Transmits the data to the MEAS, and the MEAS further transmits the service data to the user device via the eNodeB, so that it can provide service to the user device.

Based on the above embodiment, in a possible implementation, before the mobile edge application server support node (MEAS-SF) receives the service request sent by the mobile edge application server (MEAS) The SF receives the first link establishment request transmitted by the MEAS, transmits the first link establishment request to the SP via the P-GW, and transmits the first link establishment response from the SP for the first link establishment request to P -GW and sends a first link establishment response for the first link establishment request from the SP to the MEAS.

For the details, referring to the process of transmitting a first link establishment request in the embodiment of FIG. 1 to establish a connection directly to the SP by the user equipment, it will not be described again here.

Based on the above-described embodiment, in another possible implementation, the step of the mobile edge application server support node (MEAS-SF) receiving the service request sent by the mobile edge application server (MEAS) Receiving a service request sent by the MEAS and having connection information, the connection information being used to indicate that a connection is established between the MEAS and the user device; Transmitting a third link establishment request to the SP through the P-GW according to the connection information; And receiving a third link establishment response from the SP for the third link establishment request via the P-GW.

For details, referring to the process of indirectly establishing a connection to the SP by transmitting a second link establishment request in the embodiment of FIG. 2, it will not be described again here.

5A and 5B are signaling diagrams of a third embodiment of a service providing method according to the present invention. In this embodiment, if transport layer protocol processing is deployed in both MEAS and MEAS-SF, the MEAS must detect content and application services and perform synchronization on the protocol stack status and data repositioning for each service request; This embodiment can be applied to a scenario in which a plurality of eNodeBs correspond to one MEAS and MEAS-SF in the communication network. 1, 5A and 5B, a service providing method provided in an embodiment of the present invention will be described in detail below.

501: The UE sends a first link establishment request to the eNodeB.

The first link establishment request may be a SYN packet for link establishment.

502: After receiving the SYN packet, the eNodeB may use the conventional network or the MEAS network to transmit the SYN packet according to the flow control principle, and if using a conventional network, And transparent service transmission is implemented in MEAS-SF.

503: When the MEAS network is used, the eNodeB sends the first link establishment request to the MEAS, and the MEAS builds the protocol stack.

504: MEAS sends a SYN packet to the MEAS-SF, and then the MEAS-SF sends a SYN packet to the SP.

505: The SP returns a first link establishment response, i. E., A SYN ACK, on the path that received the SYN packet, in the process, MEAS records the protocol stack information transmitted between the SP and the UE.

506: The UE returns an ACK response to the SP on the path that received the SYN ACK in step 505, and in this process, the MEAS records the protocol stack information transmitted between the SP and the UE.

507: the UE initiates a service request and sends a service request to the MEAS via eNodeB; If the MEAS determines that the MEAS is capable of providing the requested service data in the service request to the user device, and determines that the MEAS can provide the service data, the service processing instruction information indicating that the MEAS can process the service request is set in the service request And MEAS indicates that the service data requested in the service request can be provided to the user equipment; Service processing indication information indicating that the MEAS can not process the service request is set in the service request, and then the service processing indication information is included in the service request and transmitted to the MEAS-SF.

508: After receiving a service request having service processing indication information, the MEAS-SF parses the service request and records whether the MEAS can process the service request, that is, Record the performance of the MEAS. After parsing the service request having the service processing instruction information and recording whether the MEAS can process the service request, the MEAS-SF deletes the service processing instruction information from the service request and transmits the service request through the P-GW SP forwards. In this process, the P-GW performs associated operations such as billing, auditing, and policy control on the user equipment in the uplink process.

509: The MEAS processes the received service request in accordance with the determination by the MEAS on the received service request in step 507. Specifically, if the MEAS determines that the service data requested in the service request can be provided to the user equipment, the MEAS takes over the original protocol stack information, and the MEAS responds to the service request to locally request the service data in the service request Generate; If the MEAS determines that the service data requested in the service request can not be provided to the user device, the MEAS waits for a response from the SP.

510: After receiving the service request transmitted by the MEAS-SF via the P-GW, the SP receives the requested service data (data) in the service request and transmits the service data to the MEAS-SF via the P- do. In this process, the P-GW performs associated operations such as billing, auditing, and policy control on the user device in the downlink process.

511: The MEAS-SF determines whether the MEAS can provide the requested service data in the service request to the user equipment, in accordance with the recorded performance of the MEAS providing the requested service in the service request. If the MEAS determines that the service data requested in the service request can be provided to the user equipment, the MEAS-SF discards the service data (data) transmitted by the SP, sends the protocol stack synchronization information to the MEAS, Initiate a synchronization task to ensure that data in the SP can be received immediately after an eNodeB handover; In addition, if the MEAS determines that the service data requested in the service request can not be provided to the user equipment, the MEAS-SF sends the service data (data) transmitted by the SP to the MEAS, ) To the MEAS.

512: MEAS is generated locally in response to a service request, and transmits the requested service data (data) requested in the service request or the received service data (data) generated by the SP and requested in the service request to the UE via the eNodeB , It can provide services such as content and application services for the UE.

513: The UE returns an ACK to the AP, the ACK is processed by the protocol stack of the MEAS, and then transmitted to the protocol stack of the SP for processing.

The size of the service data, such as the requested content and the application service, in the service request initiated by the user equipment may be large, and the MEAS or SP generates service data according to the service request and the service data is transmitted to the user equipment several times, That is, it should be noted that multiple service data may be generated for the same service request. In this case, steps 509 to 513 are repeatedly performed until all the service data are transmitted, and are specifically shown in black dashed boxes in the figure.

514: After completing answering the requested service in a service request initiated by the UE, the UE sends a link cancellation message, such as a Reset (RST) or Final (Final) FIN (not shown) , MEAS, S-GW, MEAS-SF, and P-GW to remove the established connection between the UE and the SP, i.e., after receiving the link removal message, After removing the connection between the eNodeB and receiving the RELEASE message, the SP removes the connection between SP and MEAS-SF and P-GW.

6A and 6B are signaling diagrams of a fourth embodiment of a service providing method according to the present invention. The difference between this embodiment and the embodiment shown in Figs. 5A and 5B is that in the embodiment of Figs. 5A and 5B, the transport layer protocol processing is developed in both MEAS and MEAS-SF, But; In this embodiment, in the MEAS, the transport layer protocol processing is not deployed, but only the data of the application layer is deployed; MEAS detects content or application services, and MEAS and MEAS-SF perform transmission according to data length and data offset, thereby saving backhaul bandwidth and keeping the connection between UE and SP; Referring to Figs. 1 and 6A and 6B, the service providing method provided in this embodiment of the present invention will be described in detail below.

The implementation of steps 601 to 608 is the same as the implementation of steps 501 to 508 in the embodiment of FIGS. 5A and 5B, and the details are the same as those of FIGS. 5A and 5B, Do not.

609: The MEAS processes the received service request according to the determination by the MEAS on the received service request in step 607. Specifically, if the MEAS determines that the service data requested in the service request can be provided to the user device, the MEAS prepares the mirrored response content; If the MEAS determines that the service data requested in the service request can not be provided to the user device, the MEAS waits for a response from the SP.

610: After receiving the service request transmitted by the MEAS-SF via the P-GW, the SP receives the service data requested in the service request and transmits the service data (data) to the MEAS-SF through the P-GW do. In this process, the P-GW performs associated operations such as billing, auditing, and policy control on the user device in the downlink process.

611: The MEAS-SF determines whether the MEAS can provide the requested service data in the service request to the UE according to the recorded capability of the MEAS providing the requested service in the service request. If the MEAS determines that the service data requested in the service request can be provided to the user equipment, the MEAS-SF discards the service data (data) generated in response to the service request and transmitted by the SP, And transmits data length and offset information to the MEAS, wherein the data length and offset information determine a particular content of the service data content; In addition, if the MEAS determines that the service data requested in the service request can not be provided to the user device, the MEAS-SF sends the service data (data) generated in response to the service request and transmitted by the SP to the MEAS , I.e., the received service data (data) to the MEAS.

612: the MEAS is adapted to send locally deployed services, such as content and application services, provided by the SP and the corresponding service data in response to the service request in accordance with the received data length and offset information transmitted by the MEAS- And then sends the received service data (data) or locally generated service data (data) generated by the SP to the UE via the eNodeB, thereby providing services such as content and application services for the UE .

613: The UE returns an ACK to the AP, and after the ACK is processed by the protocol stack of the MEAS, it is sent to the protocol stack of the SP for processing.

The size of the service data such as the content requested and the application service requested in the service request initiated by the user device may be large and the MEAS or SP generates corresponding service data according to the service request and transmits the service data to the user device several times , That is, multiple service data may be generated for the same service request. In this case, steps 609 to 613 are repeatedly performed until all the service data are transmitted, and specifically shown in black dashed boxes in the figure.

614: After the requested service data is transmitted in a service request initiated by the UE, the UE sends a link removal message such as a Reset (RST) or Final (FIN) FIN (not shown) MEAS, S-GW, MEAS-SF, and P-GW to remove the established connection between the UE and the SP, i.e., after receiving the link removal message, After receiving the link clear message, the SP removes the connection between SP and MEAS-SF and P-GW.

7A and 7B are signaling diagrams of a fifth embodiment of a service providing method according to the present invention. In this embodiment, the application service portion of the service is deployed in the application layer of the MEAS, and the application layer can independently provide services for the user equipment; The proxy request portion of the service is deployed in the MEAS-SF and the MEAS-SF can simulate the UE to send a response to the SP; This embodiment is applied to a scenario in which a plurality of eNodeBs exist in the communication network with a plurality of MEAS and MEAS-SF. 3 and 7A and 7B, the service providing method provided in the embodiment of the present invention will be described in detail below.

701: The UE sends a second link establishment request to the eNodeB.

The second link establishment request may be a SYN packet for link establishment.

702: After receiving the SYN packet, the eNodeB may use the conventional network or the MEAS network to transmit the SYN packet according to the flow control principle, and if using a conventional network, And transparent service transmission is implemented in MEAS-SF.

703: When the MEAS network is used, the eNodeB sends a SYN packet to the MEAS, MEAS establishes a connection to the UE instead of the SP, and returns a second link establishment response to the UE, i.e. MEAS returns a SYN ACK to the UE And the UE transmits an ACK to the MEAS after receiving the SYN ACK, so that a connection between the UE and the MEAS can be established.

704: the UE initiates a service request flowed into the MEAS via the eNodeB; The MEAS determines whether the MEAS can provide the requested service data in the service request to the user equipment; If it is determined that the service request can be provided, service processing instruction information indicating that the MEAS can process the service request is set in the service request; Otherwise, service processing indication information indicating that the MEAS can not process the service request is set in the service request, connection information indicating that the service processing indication information and the connection are established between the UE and the MEAS is included in the service and the MEAS- SF.

705: After receiving the service processing instruction information and the service request having the connection information indicating that the connection is established between the UE and the MEAS, the MEAS-SF parses the service request to obtain the service processing instruction information and connection information, In accordance with the service processing instruction information obtained by the parsing method, it records whether the MEAS can provide the requested service data in the service request to the UE, i.e., records the performance of the MEAS providing the requested service in the service request and; After learning that the connection between the user equipment and the MEAS is established according to the connection information acquired by the parsing method, the MEAS-SF sends a third link establishment request such as a SYN packet for establishing a link to the P-GW SP, and receives a third link establishment response from the SP, such as a SYN ACK for the third link establishment request, via the P-GW, thereby establishing a connection between the MEAS-SF and the SP. The MEAS-SF then sends a service request to the SP via the P-GW based on the established connection between the MEAS-SF and the SP. In this process, the P-GW performs associated operations such as billing, auditing, and policy control on the user equipment in the uplink process.

706: The MEAS processes the received service request in accordance with the determination by the MEAS on the received service request at step 704. Specifically, if the MEAS determines that the service data requested in the service request can be provided to the user equipment, the MEAS locally generates corresponding service data (data) in response to the service request; In addition, if the MEAS determines that the service data requested in the service request can not be provided to the user device, the MEAS waits for a response from the SP.

707: After receiving the service request transmitted by the MEAS-SF via the P-GW, the SP generates service data (data) corresponding to the service request and transmits the service data to the MEAS-SF via the P- do. In this process, the P-GW performs associated operations such as billing, auditing, and policy control on the usage device in the downlink process.

708: The MEAS-SF determines whether the MEAS can provide the requested service data in the service request to the UE according to the recorded capability of the MEAS providing the requested service in the service request. If the MEAS determines that the service data requested in the service request can be provided to the user equipment, the MEAS-SF discards the service data (data) transmitted by the SP, transfers the rate control information to the MEAS, To synchronize the rates between SFs; In addition, the MEAS can not provide the requested service data in the service request to the UE, and the connection is established between the UE and the MEAS, between the MEAS-SF and the MEAS-SF, not between the MEAS and the MEAS- The MEAS-SF must re-encapsulate the service data, that is, the MEAS-SF reassembles the service data sent by the SP in response to the service request through the out-of-band interface, Forward service data to MEAS.

709: Information received by the MEAS varies according to the service capability of the MEAS. Specifically, the method may include the following sub-steps.

709.1: when the MEAS receives and parses data description information, such as data length and offset information, transmitted by the MEAS-SF, and when the rate control information is obtained in a parsing manner, the rate is determined between MEAS and MEAS- Synchronized.

709.2: When the MEAS is reassembled by the MEAS-SF and receives the requested service data in the service request, the MEAS obtains the corresponding content by means of parsing and sends this content to the user equipment.

710: The UE parses the locally generated service data and the service request reassembled by the MEAS-SF, and transmits the obtained service data to the UE via the eNodeB, so that the UE provides services such as content and application services .

711: The UE returns an ACK to the MEAS, and the MEAS-SF returns an ACK to the SP.

The size of the service data such as the content requested and the application service requested in the service request initiated by the user device may be large and the MEAS or SP generates corresponding service data according to the service request and transmits the service data to the user device several times , That is, multiple service data may be generated for the same service request. In this case, steps 706 to 711 are repeatedly performed until all the service data are transmitted, and are specifically shown in black dashed boxes in the figure.

712: After the requested service data is transmitted in the service request initiated by the UE, the UE sends a link removal message, such as a Reset (RST) command or a Final (FIN) FIN And removes the established connection between the UE and the SP through the eNodeB, the MEAS, the S-GW, the MEAS-SF, and the P-GW, i.e., after receiving the link removal message, , And after receiving the link removal message, the SP removes the connection between SP and MEAS-SF and between SP and P-GW.

7A and 7B, the connection is first established between the UE and MEAS, each eNodeB corresponds to one MEAS or MEAS-SF, and a plurality of MEAS and MEAS-SF are present in the communication network; 5A and 5B and 6A and 6B, a connection is established between the UE and the SP, and only one MEAS and MEAS-SF are present in the communication network, and the MEAS initiates a protocol stack information synchronization task To ensure that the service can receive service data directly from the SP after an eNodeB handover. In the embodiment of Figures 7A and 7B, the MEAS may be a connection termination point, or also a protocol anchor point; When an eNodeB handover occurs, the MEAS switchover can be initiated according to the mapping relationship between the MEASs in the network configuration rules, after which an eNodeB handover occurs. For details, refer to Figs. 8A and 8B.

8A and 8B are signaling diagrams of a sixth embodiment of a service providing method according to the present invention. In this embodiment, a scenario in which a plurality of MEAS and MEAS-SF exist in the communication network and an eNodeB handover occurs can be applied. 3 and 8A and 8B, the service providing method provided in this embodiment of the present invention will be described in detail.

801: Establishes the mapping relationship of MEAS according to mobile network configuration rules. Specifically, at this stage, a mapping relationship between MEAS1 and MEAS2 is established.

802: UE accesses mobile communication network via eNodeB1 and performs three-way handshake with MEAS1, e.g., SYN, SYN ACK and ACK are sent between UE and MEAS, and UE and MEAS1 And a MEAS1 provides a service to the UE, that is, MEAS1 directly transmits the corresponding service data (data) generated in response to the service request to the UE.

803: When the UE handover from eNodeB1 to eNodeB2, the UE sends an ACK response to MEAS2, and MEAS2 queries the source eNodeB1 and MEAS1 for the proxy status of the service request. Specifically, if the received service request is a SYN packet, it indicates that the service is not a past provided service, MEAS2 determines whether MEAS2 can provide the requested service data in the service request to the user device; Otherwise, if the received service request is not a SYN packet, MEAS1 determines whether MEAS1 can provide the requested service data in the service request to the user device, and MEAS1 provides the service data requested in the service request to the user device If not, MEAS1 sends the service request to the SP using the conventional network.

804: If MEAS2 has learned from source eNodeB1 and MEAS1 that a service request has been transmitted using a proxy, a new tunnel is established and corresponding service data (data) generated by MEAS1 in response to the request is sent through this tunnel MEAS2, and then MEAS2 sends the service data to the P-GW, so that the P-GW performs the billing, tapping and the like (not shown in the figure), and then the service data is transmitted via the eNodeB2 to the user To the device; Data forwarding is performed continuously and cyclically until all connections are disconnected; If MEAS2 learns from eNodeB1 and MEAS1 that the service request was not sent using the proxy, MEAS2 sends the service request to the SP.

Based on the prior art, only MEAS and MEAS-SF are added to the schematic architecture diagram of the service provision system shown in Figs. 1 and 2; The present invention is not limited thereto; It should be noted that in other possible implementations, a mobile edge application server center (MEAS center) can be added and the MEAS center manages the various MEAS, MEAS center, and MEAS processing services in a hierarchical manner.

In the above-described embodiment of the present invention, the MEAS is close to the eNodeB in its physical configuration; The present invention is not limited thereto; It should be noted that in other possible implementations, the MEAS may be integrated into a base station, such as an eNodeB. Taking the UMTS network as an example, bandwidth resources between the RAN, i.e. NodeB and Radio Network Controller (RNC), can be saved if the EMAS is located close to or integrated into the eNodeB.

9 is a schematic structural diagram of Embodiment 1 of a mobile edge application server (MEAS) according to the present invention. The MEAS of this embodiment is located on the access network side and is connected to one or more base stations and further connected to a mobile edge application server support node MEAS-SF; Specifically, MEAS can be applied to MEAS and implement each step of the method provided in any embodiment of the present invention, and the specific implementation steps are not described here again. The MEAS provided in this embodiment may specifically include a receiver 91, a transmitter 92, a processor 93, a memory 94, and at least one communication bus 95. The processor 93 may be a central processing unit (CPU), and the communication bus 95 is configured to implement connection and communication between the devices. The memory 94 may include a high speed RAM memory and may further include a non-volatile memory, e.g., at least one disk memory. The memory 94 may optionally include at least one storage device located remotely from the processor 93 described above.

The receiver 91 is configured to receive a service request sent by the user equipment via a connected base station and to forward the service request to the MEAS-SF, wherein the service request is a request from the user equipment to service from the service provider (SP) Request.

The processor 93 is configured to determine if the MEAS can provide the requested service data in the service request to the user equipment.

The transmitter 92 is configured to send the requested service data in the service request to the user equipment via the connected base station if the processor determines that the MEAS can provide the service data requested in the service request to the user equipment.

According to the mobile edge application server (MEAS) provided in this embodiment, services such as content and application services provided by the SP are deployed in the MEAS, and MEAS provides the service data requested in the service request to the user device If possible, the MEAS locally generates the service data directly in response to the service request; In the physical arrangement, since the MEAS is generally located close to the base station (eNodeB), that is, on the RAN side, the user equipment can not obtain the service data provided by the SP via the RAN or CN from the server or the Internet, To directly obtain necessary service data to prevent data congestion between RAN and CN and to save network resources.

Further, when the processor determines that the MEAS can not provide the requested service data in the service request to the user equipment, the receiver 91 further adds the service data requested by the service request and transmitted by the SP from the MEAS-SF .

Further, the transmitter 92 is further configured to transmit service data requested by the service request and transmitted by the SP to the user equipment via the connected base station.

Further, the service request sent by the transmitter 92 to the MEAS-SF further has service processing indication information, and the service processing indication information indicates whether the MEAS can provide the service data requested in the service request to the UE .

Further, the receiver 91 is further configured to receive, via the connected base station, the first link establishment request transmitted by the user equipment before receiving the service request transmitted by the user equipment through the connected base station, 1 link establishment request is used to request the establishment of a connection between the user equipment and the SP.

The transmitter 92 is further configured to send a first link establishment request to the MEAS-SF.

The receiver 91 is configured to receive a first link establishment response from the SP for the first link establishment request sent by the MEAS-SF.

The transmitter 92 is further configured to transmit the first link establishment response for the first link establishment request to the user equipment via the connected base station.

Further, the receiver 91 is further configured to receive a second link establishment request transmitted by the base station via the connected base station, before receiving the service request transmitted by the user equipment through the connected base station, The link establishment request is used to request the establishment of a connection between the user equipment and the SP.

The transmitter 92 sends a second link establishment response for the second link establishment request to the user equipment via the connected base station, adds connection information between the MEAS and the user equipment to the service request, Lt; / RTI >

10 is a schematic structural diagram of Embodiment 1 of a mobile edge application server support node (MEAS-SF) according to the present invention. The MEAS-SF of this embodiment is connected to one or more mobile edge application servers (MEAS) and is connected to a packet data network gateway (P-GW). Specifically, the MEAS-SF is applied to the MEAS- May implement each step of the method provided in any of the embodiments of < RTI ID = 0.0 > embodiment, < / RTI > The MEAS-SF provided in this embodiment may specifically include a receiver 101, a transmitter 102, a processor 103, a memory 104 and at least one communication bus 105. The processor 103 may be a central processing unit (CPU), and the communication bus 105 is configured to implement connection and communication between the devices. The memory 104 may include a high-speed RAM memory and may further include a non-volatile memory, e.g., at least one disk memory. The memory 104 may optionally include at least one storage device located remotely from the processor 103 described above.

Receiver 101 is configured to receive a service request sent by the MEAS.

The transmitter 102 is configured to send the service request to the SP via the P-GW.

The receiver is further configured to receive, via the P-GW, the service data requested in the service request and transmitted by the SP, so that the core network side can bill the service data requested in the service request and the service request.

According to the mobile edge application server (MEAS-SF) provided in this embodiment, a service such as content and application service provided by the SP is deployed in the MEAS, and the MEAS sends the service data requested in the service request to the user device , The MEAS discards the service data generated by the SP in response to the service request, and locally directly generates corresponding service data in response to the service request; Since the MEAS is generally located close to the eNodeB, i.e., on the RAN side, in the physical arrangement, the user equipment can not obtain the service data provided by the SP from the server or the Internet through the CN or the RAN, Obtain data directly to avoid data congestion between RAN and CN and save network resources.

Further, the service request received by the receiver 101 additionally has service processing indication information, and the service processing indication information is used to indicate whether the MEAS can provide the requested service data in the service request to the UE.

Further, the processor 103 may be configured such that after the receiver 101 receives the service data requested by the service request and transmitted by the SP via the P-GW, the MEAS provides the service data requested in the service request to the user apparatus And is configured to discard the service data requested in the service request and transmitted by the SP if it is determined that the service can be performed.

Further, if the processor determines that the MEAS can not provide the requested service data in the service request to the user device, the transmitter 102 may further configure to send the service data requested in the service request and transmitted by the SP to the MEAS .

Further, the receiver 103 is further configured to receive the first link establishment request sent by the MEAS, and the first link establishment request is used to request establishment of a connection between the user equipment and the SP.

The transmitter 102 is further configured to send the first link establishment request to the SP via the P-GW.

The receiver 101 is further configured to receive a first link establishment response from the SP for the first link establishment request via the P-GW.

The transmitter 102 is further configured to send a first link establishment response to the MEAS.

Further, the service request received by the receiver 101 additionally has connection information, and the connection information is used to indicate that the connection is established between the MEAS and the user equipment.

The transmitter 102 is further configured to send a third link establishment request to the SP via the P-GW in accordance with the connection information.

Receiver 101 is further configured to receive a third link establishment response from the SP for the third link establishment request via the P-GW.

Further, if the processor determines that the MEAS can provide the requested service data in the service request to the user device, the processor may be further configured to synchronize the information of the requested service data in the service request with the MEAS, SP, and to synchronize the protocol stack information between the SPs and the MEAS.

It will be appreciated by those of ordinary skill in the art that all or part of the steps of this method embodiment may be implemented by a program that commands the associated hardware. The program may be stored in a computer-readable storage medium. When the program is executed, the steps of this method embodiment are performed. The above-mentioned storage medium includes any medium capable of storing program codes such as ROM, RAM, magnetic disk, or optical disk.

Finally, it should be noted that the above-described embodiments are only intended to illustrate the technical solution of the present invention and not to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that the present invention may be modified without departing from the scope of the technical solution of the embodiments of the present invention, And may make equivalent substitutions for some or all of their technical features.

Claims (28)

A service providing system comprising at least one mobile edge application server (MEAS) and at least one mobile edge application server support node (MEAS-SF)
The MEAS is located on the access network side and is connected to one or more base stations,
The MEAS-SF is located on the core network side, is connected to one or more MEASs, is connected to the packet data network gateway (P-GW)
In the MEAS,
Receiving, via a connected base station, a service request transmitted by a user equipment, wherein the service request indicates that the user equipment is requesting service data from a service provider (SP);
Determine if the MEAS can provide the requested service data in the service request to the user device;
If the MEAS is able to provide the service data requested in the service request to the user equipment, transmits the service request to the MEAS-SF, and transmits the service data requested in the service request to the user equipment Synchronizes protocol stack information between the user equipment and the SP with the MEAS-SF;
If the MEAS can not provide the service data requested in the service request to the user equipment, transmits the service request to the MEAS-SF, and transmits service data requested by the service request and transmitted by the SP to the MEAS- And transmits service data requested by the service request and transmitted by the SP to the user equipment via the connected base station
Respectively,
The MEAS-SF receives the service request transmitted by the MEAS, and transmits the service request to the P-GW so that the core network side can charge the service data requested in the service request and the service request. And to receive, via the P-GW, service data requested in the service request and transmitted by the SP,
Service delivery system. The method according to claim 1,
The service request transmitted to the MEAS-SF by the MEAS further includes service processing indication information, and the service processing indication information indicates whether the MEAS can provide the service data requested in the service request to the user device ≪ / RTI >
The MEAS-SF discards the service data requested in the service request and transmitted by the SP if the MEAS can provide the service data requested in the service request to the user equipment; Otherwise, if the MEAS is unable to provide the requested service data in the service request to the user device, then the MEAS is further configured to send the service data requested by the service request and transmitted by the SP to the MEAS.
Service delivery system. The method according to claim 1,
Wherein the P-GW is further configured to perform interception and policy control of the service request,
Service delivery system. The method according to claim 1,
Wherein the P-GW is further configured to perform eavesdropping and policy control on service data requested in the service request and transmitted by the SP,
Service delivery system. A mobile edge application server (MEAS), located on the access network side, connected to one or more base stations and further connected to a mobile edge application server support node (MEAS-SF)
A receiver configured to receive a service request sent by a user equipment via a connected base station, the service request indicating that the user equipment is requesting service data from a service provider (SP);
Determining if the MEAS is capable of providing the requested service data in the service request to the user device, and if the MEAS is capable of providing the requested service data in the service request to the user device, A processor configured to synchronize protocol stack information between the SPs with the MEAS-SF; And
If the MEAS determines that the MEAS can provide the service data requested in the service request to the user equipment, transmits the service request to the MEAS-SF, and transmits the service data requested in the service request to the connected base station Configured to send the service request to the MEAS-SF when the processor determines that the MEAS is unable to provide the requested service data in the service request to the user equipment,
Lt; / RTI >
If the processor determines that the MEAS can not provide the requested service data in the service request to the user equipment,
Wherein the receiver is further configured to obtain service data requested from the service request and transmitted by the SP from the MEAS-SF,
Wherein the transmitter is further configured to transmit service data requested by the service request and transmitted by the SP to the user equipment via the connected base station,
The service request transmitted from the MEAS to the MEAS-SF is transmitted to the MEAS-SF through the packet data network gateway (P-GW) so that the core network side can charge the service data requested in the service request and the service request. Lt; / RTI >
Mobile edge application server. 6. The method of claim 5,
Wherein the service request sent by the sender to the MEAS-SF further comprises service processing indication information, wherein the service processing indication information allows the MEAS to provide the service data requested in the service request to the user device Which is used to indicate whether or not there is a &
Mobile edge application server. 6. The method of claim 5,
Wherein the receiver is further configured to receive a first link establishment request sent by the user equipment via the connected base station before receiving a service request sent by the user equipment via the connected base station,
Wherein the first link establishment request is used to request establishment of a connection between the user equipment and the SP,
Wherein the transmitter is further configured to transmit the first link establishment request to the MEAS-SF,
Wherein the receiver is configured to receive a first link establishment response from the SP for the first link establishment request sent by the MEAS-SF,
Wherein the transmitter is further configured to transmit the first link establishment response for the first link establishment request to the user equipment via the connected base station,
Mobile edge application server. 6. The method of claim 5,
Wherein the receiver is further configured to receive a second link establishment request sent by the base station via the connected base station before receiving a service request sent by the user equipment via the connected base station,
The second link establishment request is used to request establishment of a connection between the user equipment and the SP,
Wherein the transmitter transmits the second link establishment response for the second link establishment request to the user equipment via the connected base station and adds connection information between the MEAS and the user equipment to the service request, Further comprising means for transmitting information to the MEAS-SF,
Mobile edge application server. A mobile edge application server support node coupled to one or more mobile edge application servers (MEAS) and coupled to a packet data network gateway (P-GW)
A receiver configured to receive a service request sent by the MEAS;
A transmitter configured to transmit the service request to a service provider (SP) via the P-GW; And
Processor
Lt; / RTI >
The receiver is configured to receive, via the P-GW, service data requested in the service request and transmitted by the SP, so that the core network side can charge the service data requested in the service request and the service request In addition,
The processor is further configured to determine whether the MEAS can provide the requested service data in the service request to the user device after the receiver is requested in the service request and receives the service data transmitted by the SP via the P-GW If the MEAS is able to provide the service data requested in the service request to the user equipment, discard the service data requested in the service request and transmitted by the SP, Configured to synchronize protocol stack information with the MEAS,
If the processor determines that the MEAS is unable to provide the requested service data in the service request to the user device, the transmitter sends the service data requested by the service request and transmitted by the SP to the MEAS In addition,
Mobile edge application server support node. 10. The method of claim 9,
Wherein the service request received by the receiver further has service processing indication information and the service processing indication information is used to indicate whether the MEAS is capable of providing the service data requested in the service request to the user equipment sign,
Mobile edge application server support node. 10. The method of claim 9,
Wherein the receiver is further configured to receive a first link establishment request sent by the MEAS,
Wherein the first link establishment request is used to request establishment of a connection between the user equipment and the SP,
The transmitter is further configured to send the first link establishment request to the SP via the P-GW,
Wherein the receiver is further configured to receive a first link establishment response for the first link establishment request from the SP via the P-GW,
Wherein the transmitter is further configured to transmit the first link establishment response to the MEAS,
Mobile edge application server support node. 10. The method of claim 9,
Wherein the service request received by the receiver further has connection information which is used to indicate that a connection is established between the MEAS and the user equipment,
Wherein the transmitter is further configured to transmit a third link establishment request to the SP via the P-GW in accordance with the connection information,
Wherein the receiver is further configured to receive a third link establishment response for the third link establishment request from the SP via the P-GW,
Mobile edge application server support node. 10. The method of claim 9,
If the processor determines that the MEAS can provide the requested service data in the service request to the user device, the processor is further configured to synchronize information of the requested service data in the service request with the MEAS Or the processor is further configured to synchronize protocol stack information between the user equipment and the SP with the MEAS,
Mobile edge application server support node. As a service providing method,
The mobile edge application server (MEAS) receiving a service request sent by a user device via a connected base station;
Determining by the MEAS that the MEAS is capable of providing the requested service data in the service request to the user equipment; And
If the MEAS is capable of providing the service data requested in the service request to the user equipment, transmitting the service request to the mobile edge application server support node (MEAS-SF) To the user equipment via a connected base station, and synchronizes protocol stack information between the user equipment and the SP with the MEAS-SF;
Sending the service request to the MEAS-SF if the MEAS is unable to provide the service data requested in the service request to the user device, and sending the service data requested by the service request and transmitted by the SP to the MEAS- -SF and transmitting the service data requested by the service request and transmitted by the SP to the user equipment via the connected base station
Lt; / RTI >
Wherein the service request indicates that the user equipment requests service data from a service provider (SP)
The MEAS is located on the access network side, is connected to one or more base stations, is connected to a mobile edge application server support function (MEAS-SF)
The service request transmitted from the MEAS to the MEAS-SF is transmitted to the MEAS-SF through the packet data network gateway (P-GW) so that the core network side can charge the service data requested in the service request and the service request. Lt; / RTI >
Service delivery method. As a service providing method,
The mobile edge application server support node (MEAS-SF) receiving a service request sent by a mobile edge application server (MEAS);
The MEAS-SF sending the service request to a service provider (SP);
The MEAS-SF transmits service data requested by the service request and transmitted by the SP to the packet data network gateway P (P) so that the core network side can charge the service data requested in the service request and the service request. -GW);
Determining whether the MEAS-SF is capable of providing the service data requested by the MEAS in the service request to the user equipment;
If the MEAS determines that the service data requested in the service request can be provided to the user equipment, discards the service data requested in the service request and transmitted by the SP, Synchronizing stack information with the MEAS; And
If the MEAS determines that the service data requested in the service request can not be provided to the user device, transmitting the service data requested in the service request and transmitted by the SP to the MEAS
Lt; / RTI >
Wherein the MEAS-SF is located on the core network side and is connected to one or more mobile edge application servers (MEAS) and is connected to a packet data network gateway (P-GW)
Service delivery method. delete delete delete delete delete delete delete delete delete delete delete delete delete

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